‘Fund managers remain upbeat on the outlook for Australian energy stocks even after they sustained their worst losses in three months as oil slid on fears that OPEC producers and Russia are eyeing a lift in output. The big energy names fell sharply on Monday with Woodside Petroleum down 3.5 per cent to $31.70, Oil Search down 2.2 per cent to $8.03 and Origin Energy down 1.8 per cent to $9.47.’